In this video, I provide a structural overview of electromagnetism, the Standard Model of Particle Physics, general relativity, quantum gravity, and much more.
Edit: I have unfortunately realized I cannot edit the video without deleting the old one entirely.....
Three noteworthy mistakes occur.
1. At 35 minutes I refer to T* as a dual energy-momentum tensor, but this was entirely an error in the script itself, as T* is a cotangent space, not a dual energy-momentum tensor. I have no good justification for why I made this strange mistake. That sentence was simply stated and typed up wrong altogether. Of all mistakes, this one bothers me most.
Thanks to Bruce Greetham for catching this error.
2. It will have to be assumed that the curly d notation in the Universal Lagrangian part of the video stands for covariant differentiation with the spin connection, which is necessary to include gravitational interactions with spinors, especially since I remove the electromagnetic source term after I show the QED Lagrangian.
Nothing is explicitly wrong with the equation as it stands, I just don't show any spin connection nor do I write the derivatives with conventional notation for covariance in that section. If one assumes that that operator is replaced with what I stated, we can recover our intended goal.
Thanks to Garrett Lisi for pointing this out.
3. When I explained repulsion of spin 1/2 particles and atoms, I accidentally called them spin 2 at one instant during the section of quantum electrodynamics.
Thanks to myself for pointing this out after it was too late to do anything about it...
Негізгі бет Ойындар An Elegant Structural Overview of Modern Theoretical Physics
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